單項選擇題Which statement is true when ICMP echo and echo-reply are disabled on edge devices?()

A.Pings are allowed only to specific devices.
B.CDP information is not exchanged.
C.Port scans can no longer be run.
D.Some network diagnostic data is lost.
E.Wireless devices need to be physically connected to the edge device.
F.OSPF routing needs the command ip ospf network non-broadcast enabled.


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Refer to the exhibit.

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E.The tunnel source Ethernet1 command must be configured on the Tunnel0 interface.
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